Bicycle chain guard



FIG. 1 is a side elevational view of a bicycle chain guard showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational view from the side opposite that shown in FIG. 1;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a front elevational view thereof. 

The ornamental design for a bicycle chain guard, substantially as shown. 